Abstract: A system and method for video compression divides colors of all pixel points of a target video frame into R, G, and B values, and all pixels are placed in a three-dimensional coordinate system to establish a correspondence between each pixel point and the coordinate position. Fuzzy recombination and division are performed on all pixel blocks and pixel points with similar RGB values are divided into pixel blocks to obtain a first target pixel block. Pixel blocks with same RGB values but with coordinates which are not close to the first target pixel block are extracted and divided to obtain a second target pixel block. An area enveloping the second target pixel block is extracted, and vector changes of all dynamic pixel points on the enveloping line are traversed and analyzed to determine a minimum compression change block for compression process.

Abstract: A generator control system capable of realizing series-parallel connection comprises a first generator, a second generator, a first inverter and a second inverter, wherein a power output terminal of the first generator is connected to a power input terminal of the first inverter, and a power output terminal of the second generator is connected to a power input terminal of the second inverter. The generator control system further comprises a series-parallel connection box, and the first inverter and the second inverter are connected to the series-parallel connection box. Various voltages and power can be provided through the change-over switch.

Abstract: A method for preparing a semiconductor device includes: providing a semiconductor substrate, in which a trench is formed on the semiconductor substrate, a filling layer is formed in the trench, and a void is formed in the filling layer; removing a portion of the filling layer to expose the void; forming a plug, in which the plug is configured to plug the void and extends into the void by at least a preset distance; and removing a portion of the filling layer and remaining the plug with at least a preset height until the filling layer reaches a preset thickness to form a contact hole.

Abstract: This disclosure may provide a system and a method. The method may include obtaining one or more sets of reference signals collected by a coil of a magnetic resonance imaging (MRI) device in a pre-scan. The pre-scan may be performed on a subject before an MRI scan of the subject. The method may also include obtaining a first fault detection model. The first fault detection model may be a trained machine learning model. The method may further include determining whether the coil has a failure based on the one or more sets of reference signals and the first fault detection model.

Abstract: A system and method for video compression divides colors of all pixel points of a target video frame into R, G, and B values, and all pixels are placed in a three-dimensional coordinate system to establish a correspondence between each pixel point and the coordinate position. Fuzzy recombination and division are performed on all pixel blocks and pixel points with similar RGB values are divided into pixel blocks to obtain a first target pixel block. Pixel blocks with same RGB values but with coordinates which are not close to the first target pixel block are extracted and divided to obtain a second target pixel block. An area enveloping the second target pixel block is extracted, and vector changes of all dynamic pixel points on the enveloping line are traversed and analyzed to determine a minimum compression change block for compression process.

Abstract: A method for calculating an optimal energy flow of an integrated electricity-gas system comprises: a convex optimization part of an optimal energy flow model is established according to a fuel cost of each thermal power unit node and a gas supply cost of each nature gas source node, and a convex relaxation formula of a quadratic constraint of the optimal energy flow model is established, and a convex function is expanded by a first order Taylor expansion at a relaxation solution to form an expansion formula; a precision requirement threshold value of a non-convex constraint is given, the threshold value is compared with an unbalance magnitude of a non-convex constraint in the expansion formula; when the unbalance magnitude is greater than the threshold value, the expansion is iterated into a solution model of the integrated electricity-gas hybrid energy system until the unbalance magnitude is not greater than the threshold value.

Abstract: Disclosed herein are dosing regimens of GLP-1 and/or GLP-1 analog(s).

Abstract: The present disclosure provides a magnetic resonance imaging (MRI) radio frequency (RF) coil assembly. The MRI RF coil assembly may include one or more coils and one or more control circuits. Each of the one or more coils may include a first end and a second end. Each of the one or more control circuits may electrically connect the first end and the second end of one of the one or more coil. Each of the one or more control circuits may be configured to adjust an operation of the coil that is electrically connected with the control circuit based on an input control signal. The one or more control circuits may be located at different regions.

Abstract: The present disclosure provides a magnetic resonance imaging (MRI) radio frequency (RF) coil assembly. The MRI RF coil assembly may include one or more coils and one or more control circuits. Each of the one or more coils may include a first end and a second end. Each of the one or more control circuits may electrically connect the first end and the second end of one of the one or more coil. Each of the one or more control circuits may be configured to adjust an operation of the coil that is electrically connected with the control circuit based on an input control signal. The one or more control circuits may be located at different regions.

Abstract: The present disclosure provides a magnetic resonance imaging (MRI) radio frequency (RF) coil assembly. The MRI RF coil assembly may include one or more coils and one or more control circuits. Each of the one or more coils may include a first end and a second end. Each of the one or more control circuits may electrically connect the first end and the second end of one of the one or more coil. Each of the one or more control circuits may be configured to adjust an operation of the coil that is electrically connected with the control circuit based on an input control signal. The one or more control circuits may be located at different regions.

Abstract: A cable-direction-adaptive ROV winch applied to non-DP-equipped motherships, includes a non-DP-equipped mothership, an A-shaped support and a winch cable-drawing roller provided on the non-DP-equipped mothership, and an underwater vehicle. A pulley is rotatably connected to the A-shaped support, the underwater vehicle is connected to an umbilical cable, the umbilical cable passes around the pulley to be connected to the winch cable-drawing roller, and a locating unit for guiding the umbilical cable is provided on the non-DP-equipped mothership. The A-shaped support is provided with a rod. The pulley includes a sliding section and a rotating section, and the sliding section is annular and slides on the rod along a direction of the rod. The rod has a groove, and a bulge portion is formed on the sliding section. The rotating section is rotatably connected to an outer circle of the sliding section via a shaft bearing.

Abstract: A cable-direction-adaptive ROV winch applied to non-DP-equipped motherships, includes a non-DP-equipped mothership, an A-shaped support and a winch cable-drawing roller provided on the non-DP-equipped mothership, and an underwater vehicle. A pulley is rotatably connected to the A-shaped support, the underwater vehicle is connected to an umbilical cable, the umbilical cable passes around the pulley to be connected to the winch cable-drawing roller, and a locating unit for guiding the umbilical cable is provided on the non-DP-equipped mothership. The A-shaped support is provided with a rod. The pulley includes a sliding section and a rotating section, and the sliding section is annular and slides on the rod along a direction of the rod. The rod has a groove, and a bulge portion is formed on the sliding section. The rotating section is rotatably connected to an outer circle of the sliding section via a shaft bearing.

Abstract: A local coil apparatus for performing a magnetic resonance (MR) scanning on a local part of a subject is provided. The local coil apparatus may include at least one receiving system for receiving the local part. The at least one receiving system may each include an activation member, a receiving member assembly, and a driving mechanism. The receiving member assembly may include one or more receiving members. Each of the one or more receiving members may include a first coil assembly configured to receive MR signals during the MR scanning. The driving mechanism may be physically connected to the one or more receiving members. When the local part is placed on the activation member, the activation member may cause the driving mechanism to drive the receiving member assembly to change from a first configuration to a second configuration to reduce a distance between at least a portion of the first coil assembly and a portion of the local part so that the first coil assembly conforms to the local part.

Abstract: A local coil apparatus for performing a magnetic resonance (MR) scanning on a local part of a subject is provided. The local coil apparatus may include at least one receiving system for receiving the local part. The at least one receiving system may each include an activation member, a receiving member assembly, and a driving mechanism. The receiving member assembly may include one or more receiving members. Each of the one or more receiving members may include a first coil assembly configured to receive MR signals during the MR scanning. The driving mechanism may be physically connected to the one or more receiving members. When the local part is placed on the activation member, the activation member may cause the driving mechanism to drive the receiving member assembly to change from a first configuration to a second configuration to reduce a distance between at least a portion of the first coil assembly and a portion of the local part so that the first coil assembly conforms to the local part.

Abstract: A method for preparing a GaN substrate material includes: performing in-situ epitaxy on a Ga2O3 thin film and a GaN thin film in a multifunctional HVPE growth system. First, the Ga2O3 thin film is grown on a substrate such as sapphire by an HVPE-like method, and the Ga2O3 is nitrided in an ammonia gas atmosphere to form a GaN/Ga2O3 composite thin film. Then, a GaN thick film is grown on the GaN/Ga2O3 composite thin film by HVPE to obtain a high-quality GaN thick film material. The Ga2O3 layer is removed by chemical etching to obtain a self-supporting GaN substrate material. Or, the conventional laser lift-off method is used to separate the GaN thick film from the heterogeneous substrate such as the sapphire to obtain a GaN self-supporting substrate material.

Abstract: Methods of stimulating a well comprising providing a stimulation fluid comprising at least one surfactant and submicron particles, the submicron particles having a particle size between about 200 nm and about 800 nm and a specific surface area greater than about 5 square meters per gram; and introducing the stimulation fluid into a wellbore. Additional methods to enhance oil recovery from subterranean reservoirs accessible via a well are described.

Abstract: The present invention discloses liquid crystal compounds having dibenzopyran derivatives with cycloalkyl groups, and preparation methods and application thereof. The liquid crystal compounds having dibenzopyran derivatives with cycloalkyl terminal groups, shown in formula I, exhibit better miscibility and a very large negative dielectric constant, compared to those having a flexible alkyl chain as a terminal group, therefore the compounds of the present invention, shown in formula I, may improve the miscibility of liquid crystal compounds and broaden the application range of liquid crystal mixtures. In addition, the compounds may also increase the negative dielectric constants of liquid crystal mixtures, having an important application value.

Abstract: A method for processing information and an electronic device are provided. The method includes: sending a first instruction to a second electronic device through a radio frequency identification unit to inquire identification information of the second electronic device; acquiring the identification information of the second electronic device; and obtaining position information of the second electronic device according to the identification information of the second electronic device. With the disclosure, a more enriched usage scene for man-machine interaction is provided, and user experience is improved.

Abstract: This invention relates to liquid crystal compound of formula I containing benzene derivatives group that hydrogen substituted by deuterium. Liquid crystal compounds of formula I have not only large positive dielectric anisotropy, but also moderate optical anisotropy and driving voltage, thereby having great significance to formulate a liquid crystal mixture. A liquid crystal mixture containing such type of liquid crystal compounds can be applied in various display devices, which is particularly suitable for TN and STN display devices, and can also be used in IPS and VA display devices.